Tube frame for axminster looms



Dec. 11, 1934'. AW' E- MCCLEARY 1,983,864

TUBE FRAME FOR AXMINSTER LOOMS Filed March 4, 1931 iwf/yay? PatentedDec. 11, 1934 UNITED STATES PATENT OFFICE TUBE FRAME FOR AXllIINSTERLOOMS Application March 4, 1931, Serial No. 520,047

Claims.

- This invention relates to improvements in tube frames for Axminsterlooms and it is the general object `of 'the invention to provide .meanswhereby a greater number of rugs may be Woven from the spools than hasheretofore been possible.

In the weaving of Axminster fabrics there is employed a series of spoolseach of which has wound thereon color yarns to be presented in rotationtothe fabric, the colors being variously `located on the succeedingspools to produce the Ythe barrel of the spool can be corrected by theclamp. By the use of the attachment set forth herein there is asubstantial reduction in Athe lamountof waste yarn on each spool.

-It is customary yto provide Axminster tube frames with a color yarnguiding bead which -acts 'as a guard for the edges of the yarn tubes'and it is a Afurther'object of my invention to provide a clamp whichWill co-act with this bead to tension the yarns for the aforesaidpurpose.

Itis another object of the invention to provide a clamp which shall beremovably held in position and of such construction that it may readilybe used in connection with existing tube frames and spools. The lattermay have smoothy barrels and thetube frames may be used in the usual Wayto weave the greater part of the color yarn, after which the clamps maybe applied. tothe tube vframes and the remaining rugs woven by its use.

It is another important object of my present invention to provide asingle clamping means for all the yarns which extend from the yarn spooland locate the same between the yarn spools and yarn tubes so that theyarn will not drop out of the tubes as `the tube frame passes over thesprockets and in which condition the yarn tubes extend from the frame inan upward direction.

With these and other objects in view Which will appear as thedescription proceeds, my invention resides in the combination andarrangement of parts hereinafter described and set forth in the claims.

In the accompanying drawing, wherein a convenient embodiment of myinvention is set forth,

Fig. 1 is a front elevation of a tube frame made according to my presentinvention,

Fig. 2 is an end elevation taken in the direction of arrow 2, Fig. l,

Fig. 3 is an enlarged vertical section on line 3-3 of Fig. l,

Fig. 4 is a detail of one of the clamping bars, and

Fig. 5 is a detail of one of the spring clips.

Referring to Fig. 1, I have shown a tube frame having a body which maybe formed of a hollow tube l1 in which may be located a pair of woodenstrips 12 and 13, respectively. Secured to the outer portion of the barare a plurality of angular strips 14 `which may be held in position bywood screws l5 anchored into one or the other of the wooden strips 12 or13. Tuft yarn tubes 16 may be soldered to the angle strips and thelatter may be formed with a longitudinal bead 17 struck therein abovethe tubes and so positioned as to guard certain edges of the yarn tube16. Each end ci the tube frame is provided with the bracket 18 having aspool bearing 19 which supports a spool 20. The latter may have theyarns Y thereon which are led through the various tubes 16 to extenddownwardly into tuft forming position. The usual brake 21 may beemployed for the spool heads for the purpose of retarding the turning ofthe spool.

In use there will be provided a plurality lof tube frames which willhave their yarns arranged in various orders as regards color and bymechanism not shown but Well understood the tube frames are movedsuccessively to tuft forming position. The spool may have a barrel 22 onwhich the yarns are wound.

The matter thus far described is of common construction, beingsubstantially as shown in Patent No. 1,515,022, and may operate and beconstructed similar' to a Well-known commercial type of tube frame. Asthe yarn is unwound from the spools in ordinary practice they comeultimately to a condition of looseness which makes their control verydifficult, and although the friction brakes 21 may retard movement ofthe spools, yet the short remaining ends of the color yarns are free tounwind fiom the spools.

In carrying my invention into effect I provide one or more devices whichcan be readily clamped to the tube frame at any desired time to overcomethe defect which would otherwise follow from looseness of the yarn onthe spool barrel. As set forth herein I provide the tube frame with aplurality of spring clips 30 which, as shown in Fig. 3, may have anupper horizontal portion 3l held to the tube frame by means of screws 32and may have also a vertical angle section 33. These clips are arrangedat spaced intervals along the length of the tube 'frame and the lowerend of each of them may be formed with an upwardly opening pocket 35dened in part by the upturned end 36.

In wide Axminister looms I prefer to use a plurality of clamping bars 40which may have reduced end gudgeons 41 and a reduced central journal 42.The gudgeons and journals of the various bars are adapted to be receivedby the pockets 35 and the latter are so formed to retain the barsagainst accidental upward movement and also to hold said barsresiliently against the bead 17. This latter arrangement is notessential, as it is sucient for the purposes of the present invention iithe bars clamp the yyarns against a surface carried the tube ends of thetube frame may be made somewhat wider than those employed at the endsfor the purpose of receiving gudgeons el of4 adjacent clamping bars.

In operation, the bars may be applied to the tube frame so as to be inposition when the last part of the yarn is to be unwound from thespools. It is not necessary that the clamp be in position throughout theentire period during which a full spool is unwound, and it is tobeunderstood that the pressure exerted by the clamp is merely enough tohold the yarns in position. As the color yarns work loose on the spoolbarrels they may unwind slightly from the latter due to their ownresilience, but the clamping bars 40 will hold the yarns in position andserve to impose upon the latter a resistance. The friction will permitthe yarns to be drawn through the tuft tubes for the formation ofadditional rugs even though the color yarns be loose with respect to thespool. When threading the tubes preparatory to weaving the iirst rug theclamp may be removed so as not to interfere with any hooks or the likewhich may be inserted through the yarn tube 16 to thread the latter.

From the foregoing it will be seen that I have provided a very simpledevice applicable to the tube frame and positioned to exert pressureagainst the color yarns, to the end that the same may be withdrawncorrectly to form rugs even though they be loose with respect to thebarrel spool.

Having thus described my invention it will be seen that changes andmodications may be made therein by those skilled in the art withoutdeparting from the spirit and scope of the invention and I do not wishto be limited to the details herein disclosed, but what I claim is:

l. In an Axminster tube frame having thereon a yarn spool and tuft yarntubes spaced from the spool, a clamping element located between thespool and the yarn tubes, and extending transversely of the yarn tubes,and resilient means to hold said clamping element against the yarn toapply friction to a plurality of yarns as the same moves from the spooltoward the tuft tube, said resilient means mounted directly on the tubeframe independently of the yarn tubes.

2. In an Axminster tube frame having a yarn spool rotatably mountedthereon and tuft yarn tubes spaced from the spool, a clamping elementlocated between the spool and the yarn tubes, resilient means to holdsaid clamping element against the yarn inA all positions of the tubeframe to apply riction to the yarns as the same moves toward the tufttube, and means deiining a removable connection between the element andresilient means.

3. In an Axminster tube frame having a yarn spool rotatably mountedthereon and tuft yarn tubes spaced from the spool, a longitudinallyextending clamp operative independently of the position of the tubeframe to force the yarns against a portion of the tube frame, andresilient supports mounted directly on the tube tubes spaced from thespool, a longitudinally extending bar forming part of the tube frame, apair or longitudinally extending members both supported by the bar, theyarn moving between said members, one of the latter being fixed withrespect to the bar and having a concave surface and the other beingyieldably mounted on the bar and acting to force the yarns against theconcave surface of the member iixed to the bar.

5. In an Axminster tube frame having a yarn spool and tuft yarn guidesspaced from the spool, a bead extending along the tube frame between theguides and the spool to guard the tuft yarn tubes, said bead having aconcave surface on the spool `side of the bead, and a tension deviceyieldingly mounted directly from the tube frame to present the tuftyarns against said concave surface, the tuft yarn passing from the beadinto the yarn tube uninterrupted by the device.

WILLIAM E. MCCLEARY.

